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Phase separation kinetics of an S A liquid crystal in a reactive epoxy‐amine PDLC system: an X‐ray diffraction study
Author(s) -
Dumon Michel,
Achard Marie France,
Masood Siddiqi Humaira,
Pascault Jean Pierre,
Hardouin Francis
Publication year - 2000
Publication title -
macromolecular chemistry and physics
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.57
H-Index - 112
eISSN - 1521-3935
pISSN - 1022-1352
DOI - 10.1002/(sici)1521-3935(20000301)201:6<670::aid-macp670>3.0.co;2-5
Subject(s) - polymerization , kinetics , monomer , materials science , polymer chemistry , phase (matter) , polymer , chemical engineering , liquid crystal , chemistry , organic chemistry , composite material , physics , quantum mechanics , engineering , optoelectronics
A Polymer Dispersed Liquid Crystal composite based upon a smectic liquid crystal and reactive crosslinkable epoxide‐amine monomers was studied. The composite material is obtained by a polymerization induced phase separation process. The polymerization and the phase separation kinetics are both monitored. The polymerization induced phase separation is detected and quantitatively monitored by X‐ray diffraction. The normalized X‐ray intensity is used to calculate a phase separation rate and to define the phase separation kinetics which is compared to the polymerization rate and to the polymerization kinetics. The rate difference accounts for changes in morphology.